geico, see how much you could save. >>> accusations tonight that the general at the top of the california national guard failed to keep his promise, failed to fix the culture behind the gates of the guard. the accusations following a series of critical investigations by the nbc bay area investigative unit, and knbc in los angeles. >> tony is back with a new development, and the accusations come from the leader of the guard's largest union. >> exactly right, janelle. it's not unusual for a union to question leadership. but this is unusual, because less than a year ago, the union was endorsing general david baldwin. now that support has turned to criticism. >> the reason that i'm here is because it's the right thing to do. >> he's the decisionmaker for the national guard's largest union. representing full-time civilian technicians. >> the reason that i'm here is because i feel that your story is the right thing to do. this has to be told. >> reporter: he admits speaking out will likely hurt his union's ongoing contract negotiations with the guard's leadership. he's talking to us after watch